Substitutional solutes in AlRu—I. Effects of solute on moduli, lattice parameters and vacancy production

• Published in: Acta metallurgica et materialia Vol. 41; no. 3; pp. 863 - 869
• Main Author: Fleischer, R.L.
• Format: Journal Article
• Language: English
• Published: Tarrytown, NY Elsevier B.V 01.03.1993; Pergamon Press
• Subjects: 360102 - Metals & Alloys- Structure & Phase Studies; 360103 - Metals & Alloys- Mechanical Properties; 360104 - Metals & Alloys- Physical Properties; ALLOY SYSTEMS; ALLOYS; ALUMINIUM ALLOYS; Applied sciences; BINARY ALLOY SYSTEMS; COBALT; Cross-disciplinary physics: materials science; rheology; DENSITY; ELASTICITY; ELEMENTS; Exact sciences and technology; INTERMETALLIC COMPOUNDS; IRON; LATTICE PARAMETERS; MATERIALS SCIENCE; MECHANICAL PROPERTIES; METALS; Metals. Metallurgy; PHYSICAL PROPERTIES; Physics; PLATINUM METAL ALLOYS; RUTHENIUM ALLOYS; Solid solution, precipitation, and dispersion hardening; aging; SOLUBILITY; SOLUTES; TENSILE PROPERTIES; TITANIUM; TRANSITION ELEMENTS; Treatment of materials and its effects on microstructure and properties; Elastic modulus; Stoichiometry; Solid solution strengthening; Vacancy; Intermetallic compound; Crystal defect; Experimental study; Lattice parameters; Solute effect; Aluminium Alloys; Binary alloy; Aluminium Ruthenium Alloys
• ISSN: 0956-7151; 1873-2879
• DOI: 10.1016/0956-7151(93)90020-S

The effect of solute-related defects in AlRu are measured by changes that they produce in lattice parameter, specific gravity and elastic moduli. By comparison with the effects of off-stoichiometry on the same parameters in binary AlRu alloys, the solute-produced defects can be partially characterized. Cell occupancy numbers are calculated and used to infer that vacancies are formed on the Al-rich side of stoichiometry, but possibly on a less than one vacancy per excess Al atom basis. These data are also needed to test the effects on the solutes studied—Co, Fe and Ti—on mechanical hardening to be reported separately in Part II.